/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_2.i


--------------------------------------------------------------------------------


This is Ultimate 0.2.2-dev-05ce600
[2022-02-23 16:02:34,856 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-02-23 16:02:34,883 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-02-23 16:02:34,911 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-02-23 16:02:34,911 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-02-23 16:02:34,912 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-02-23 16:02:34,913 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-02-23 16:02:34,914 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-02-23 16:02:34,915 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-02-23 16:02:34,916 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-02-23 16:02:34,931 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2022-02-23 16:02:34,932 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-02-23 16:02:34,933 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-02-23 16:02:34,933 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-02-23 16:02:34,934 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-02-23 16:02:34,935 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-02-23 16:02:34,935 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-02-23 16:02:34,936 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-02-23 16:02:34,937 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-02-23 16:02:34,938 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-02-23 16:02:34,939 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-02-23 16:02:34,939 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-02-23 16:02:34,940 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-02-23 16:02:34,940 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-02-23 16:02:34,942 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-02-23 16:02:34,942 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-02-23 16:02:34,942 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-02-23 16:02:34,943 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-02-23 16:02:34,943 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-02-23 16:02:34,944 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-02-23 16:02:34,944 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-02-23 16:02:34,944 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-02-23 16:02:34,945 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-02-23 16:02:34,945 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-02-23 16:02:34,946 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-02-23 16:02:34,946 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-02-23 16:02:34,946 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
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[2022-02-23 16:02:34,946 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2022-02-23 16:02:34,947 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-02-23 16:02:34,948 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf
[2022-02-23 16:02:34,959 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-02-23 16:02:34,960 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-02-23 16:02:34,961 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-02-23 16:02:34,961 INFO  L138        SettingsManager]:  * sizeof long=4
[2022-02-23 16:02:34,961 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-02-23 16:02:34,961 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2022-02-23 16:02:34,962 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-02-23 16:02:34,962 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-02-23 16:02:34,962 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-02-23 16:02:34,962 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-02-23 16:02:34,962 INFO  L138        SettingsManager]:  * sizeof long double=12
[2022-02-23 16:02:34,962 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-02-23 16:02:34,963 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2022-02-23 16:02:34,963 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-02-23 16:02:34,963 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-02-23 16:02:34,963 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-02-23 16:02:34,963 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2022-02-23 16:02:34,963 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-02-23 16:02:34,963 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-02-23 16:02:34,963 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-02-23 16:02:34,963 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-02-23 16:02:34,964 INFO  L136        SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2022-02-23 16:02:34,964 INFO  L138        SettingsManager]:  * TransformationType=LOOP_ACCELERATION_JORDAN
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-02-23 16:02:35,151 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-02-23 16:02:35,169 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-02-23 16:02:35,170 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-02-23 16:02:35,171 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-02-23 16:02:35,171 INFO  L275        PluginConnector]: CDTParser initialized
[2022-02-23 16:02:35,172 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_2.i
[2022-02-23 16:02:35,229 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/362efe11d/3f67aa79de0243629fd6b4a34b89872a/FLAG5cc39bb5d
[2022-02-23 16:02:35,620 INFO  L306              CDTParser]: Found 1 translation units.
[2022-02-23 16:02:35,621 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_2.i
[2022-02-23 16:02:35,624 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/362efe11d/3f67aa79de0243629fd6b4a34b89872a/FLAG5cc39bb5d
[2022-02-23 16:02:35,633 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/362efe11d/3f67aa79de0243629fd6b4a34b89872a
[2022-02-23 16:02:35,635 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-02-23 16:02:35,636 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2022-02-23 16:02:35,637 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-02-23 16:02:35,637 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-02-23 16:02:35,651 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-02-23 16:02:35,651 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:02:35" (1/1) ...
[2022-02-23 16:02:35,652 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67e441ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:02:35, skipping insertion in model container
[2022-02-23 16:02:35,652 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:02:35" (1/1) ...
[2022-02-23 16:02:35,657 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-02-23 16:02:35,665 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-02-23 16:02:35,774 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_2.i[919,932]
[2022-02-23 16:02:35,794 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-02-23 16:02:35,801 INFO  L203         MainTranslator]: Completed pre-run
[2022-02-23 16:02:35,810 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_2.i[919,932]
[2022-02-23 16:02:35,819 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-02-23 16:02:35,828 INFO  L208         MainTranslator]: Completed translation
[2022-02-23 16:02:35,828 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:02:35 WrapperNode
[2022-02-23 16:02:35,828 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-02-23 16:02:35,829 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-02-23 16:02:35,829 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-02-23 16:02:35,829 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-02-23 16:02:35,836 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:02:35" (1/1) ...
[2022-02-23 16:02:35,836 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:02:35" (1/1) ...
[2022-02-23 16:02:35,841 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:02:35" (1/1) ...
[2022-02-23 16:02:35,841 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:02:35" (1/1) ...
[2022-02-23 16:02:35,850 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:02:35" (1/1) ...
[2022-02-23 16:02:35,853 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:02:35" (1/1) ...
[2022-02-23 16:02:35,854 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:02:35" (1/1) ...
[2022-02-23 16:02:35,858 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-02-23 16:02:35,859 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-02-23 16:02:35,859 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-02-23 16:02:35,859 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-02-23 16:02:35,860 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:02:35" (1/1) ...
[2022-02-23 16:02:35,865 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-02-23 16:02:35,871 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-23 16:02:35,880 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-02-23 16:02:35,928 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-02-23 16:02:35,943 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2022-02-23 16:02:35,943 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-02-23 16:02:35,943 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2022-02-23 16:02:35,943 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2022-02-23 16:02:35,943 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2022-02-23 16:02:35,943 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2022-02-23 16:02:35,943 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2022-02-23 16:02:35,943 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2022-02-23 16:02:35,944 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_perror_fail
[2022-02-23 16:02:35,944 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert
[2022-02-23 16:02:35,944 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2022-02-23 16:02:35,944 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-02-23 16:02:35,944 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2022-02-23 16:02:35,944 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2022-02-23 16:02:35,944 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint
[2022-02-23 16:02:35,945 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2022-02-23 16:02:35,945 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2022-02-23 16:02:35,945 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2022-02-23 16:02:35,945 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2022-02-23 16:02:35,945 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2022-02-23 16:02:35,946 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2022-02-23 16:02:35,946 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2022-02-23 16:02:35,946 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-02-23 16:02:36,008 INFO  L234             CfgBuilder]: Building ICFG
[2022-02-23 16:02:36,010 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-02-23 16:02:36,124 INFO  L275             CfgBuilder]: Performing block encoding
[2022-02-23 16:02:36,133 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-02-23 16:02:36,133 INFO  L299             CfgBuilder]: Removed 2 assume(true) statements.
[2022-02-23 16:02:36,134 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:02:36 BoogieIcfgContainer
[2022-02-23 16:02:36,134 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-02-23 16:02:36,135 INFO  L113        PluginConnector]: ------------------------IcfgTransformer----------------------------
[2022-02-23 16:02:36,135 INFO  L271        PluginConnector]: Initializing IcfgTransformer...
[2022-02-23 16:02:36,136 INFO  L275        PluginConnector]: IcfgTransformer initialized
[2022-02-23 16:02:36,138 INFO  L185        PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:02:36" (1/1) ...
[2022-02-23 16:02:36,147 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 23.02 04:02:36 BasicIcfg
[2022-02-23 16:02:36,147 INFO  L132        PluginConnector]: ------------------------ END IcfgTransformer----------------------------
[2022-02-23 16:02:36,148 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-02-23 16:02:36,148 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-02-23 16:02:36,150 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-02-23 16:02:36,150 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 04:02:35" (1/4) ...
[2022-02-23 16:02:36,150 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ba0ae4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:02:36, skipping insertion in model container
[2022-02-23 16:02:36,151 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:02:35" (2/4) ...
[2022-02-23 16:02:36,151 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ba0ae4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:02:36, skipping insertion in model container
[2022-02-23 16:02:36,151 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:02:36" (3/4) ...
[2022-02-23 16:02:36,151 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ba0ae4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 04:02:36, skipping insertion in model container
[2022-02-23 16:02:36,151 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 23.02 04:02:36" (4/4) ...
[2022-02-23 16:02:36,152 INFO  L111   eAbstractionObserver]: Analyzing ICFG simple_array_index_value_2.iJordan
[2022-02-23 16:02:36,155 INFO  L205   ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION
[2022-02-23 16:02:36,155 INFO  L164   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-02-23 16:02:36,198 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-02-23 16:02:36,203 INFO  L339      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR
[2022-02-23 16:02:36,203 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-02-23 16:02:36,210 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 30 states, 20 states have (on average 1.35) internal successors, (27), 21 states have internal predecessors, (27), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2022-02-23 16:02:36,215 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2022-02-23 16:02:36,215 INFO  L506         BasicCegarLoop]: Found error trace
[2022-02-23 16:02:36,215 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-23 16:02:36,216 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-23 16:02:36,219 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-02-23 16:02:36,219 INFO  L85        PathProgramCache]: Analyzing trace with hash -183287108, now seen corresponding path program 1 times
[2022-02-23 16:02:36,224 INFO  L126   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-23 16:02:36,225 INFO  L338   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617915045]
[2022-02-23 16:02:36,225 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-23 16:02:36,225 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-23 16:02:36,327 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:02:36,403 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-23 16:02:36,405 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:02:36,414 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-23 16:02:36,414 INFO  L144   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-23 16:02:36,414 INFO  L338   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617915045]
[2022-02-23 16:02:36,415 INFO  L165   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617915045] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-23 16:02:36,415 INFO  L191   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-23 16:02:36,415 INFO  L204   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-02-23 16:02:36,416 INFO  L118   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827001966]
[2022-02-23 16:02:36,416 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-23 16:02:36,419 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-02-23 16:02:36,419 INFO  L108   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-23 16:02:36,439 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-02-23 16:02:36,440 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-02-23 16:02:36,441 INFO  L87              Difference]: Start difference. First operand  has 30 states, 20 states have (on average 1.35) internal successors, (27), 21 states have internal predecessors, (27), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand  has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-23 16:02:36,532 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-23 16:02:36,532 INFO  L93              Difference]: Finished difference Result 38 states and 41 transitions.
[2022-02-23 16:02:36,533 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-02-23 16:02:36,534 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13
[2022-02-23 16:02:36,534 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-23 16:02:36,538 INFO  L225             Difference]: With dead ends: 38
[2022-02-23 16:02:36,538 INFO  L226             Difference]: Without dead ends: 33
[2022-02-23 16:02:36,539 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-02-23 16:02:36,541 INFO  L933         BasicCegarLoop]: 24 mSDtfsCounter, 28 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-23 16:02:36,542 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 33 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-23 16:02:36,552 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 33 states.
[2022-02-23 16:02:36,560 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 26.
[2022-02-23 16:02:36,561 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 26 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2022-02-23 16:02:36,562 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions.
[2022-02-23 16:02:36,562 INFO  L78                 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 13
[2022-02-23 16:02:36,562 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-02-23 16:02:36,563 INFO  L470      AbstractCegarLoop]: Abstraction has 26 states and 27 transitions.
[2022-02-23 16:02:36,563 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-23 16:02:36,563 INFO  L276                IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions.
[2022-02-23 16:02:36,563 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2022-02-23 16:02:36,563 INFO  L506         BasicCegarLoop]: Found error trace
[2022-02-23 16:02:36,564 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-23 16:02:36,564 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-02-23 16:02:36,564 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-23 16:02:36,564 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-02-23 16:02:36,565 INFO  L85        PathProgramCache]: Analyzing trace with hash 364957256, now seen corresponding path program 1 times
[2022-02-23 16:02:36,565 INFO  L126   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-23 16:02:36,565 INFO  L338   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263578663]
[2022-02-23 16:02:36,565 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-23 16:02:36,565 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-23 16:02:36,581 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:02:36,621 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-23 16:02:36,624 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:02:36,627 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2022-02-23 16:02:36,630 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:02:36,633 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-23 16:02:36,634 INFO  L144   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-23 16:02:36,634 INFO  L338   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263578663]
[2022-02-23 16:02:36,634 INFO  L165   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263578663] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-23 16:02:36,634 INFO  L338   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732140473]
[2022-02-23 16:02:36,634 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-23 16:02:36,634 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-23 16:02:36,634 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-23 16:02:36,636 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-02-23 16:02:36,637 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2022-02-23 16:02:36,685 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:02:36,687 INFO  L263         TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 20 conjunts are in the unsatisfiable core
[2022-02-23 16:02:36,704 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-02-23 16:02:36,920 INFO  L390             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11
[2022-02-23 16:02:37,067 INFO  L356             Elim1Store]: treesize reduction 11, result has 21.4 percent of original size
[2022-02-23 16:02:37,068 INFO  L390             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 22
[2022-02-23 16:02:37,298 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-23 16:02:37,298 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-02-23 16:02:37,424 INFO  L390             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 41
[2022-02-23 16:02:37,441 INFO  L356             Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2022-02-23 16:02:37,442 INFO  L390             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 88
[2022-02-23 16:02:37,536 INFO  L356             Elim1Store]: treesize reduction 14, result has 6.7 percent of original size
[2022-02-23 16:02:37,538 INFO  L390             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 336 treesize of output 315
[2022-02-23 16:02:37,833 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-23 16:02:37,834 INFO  L165   FreeRefinementEngine]: IpTcStrategyModuleZ3 [732140473] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-23 16:02:37,834 INFO  L191   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-23 16:02:37,834 INFO  L204   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 12] total 20
[2022-02-23 16:02:37,836 INFO  L118   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384680278]
[2022-02-23 16:02:37,838 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-23 16:02:37,839 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 20 states
[2022-02-23 16:02:37,843 INFO  L108   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-23 16:02:37,844 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2022-02-23 16:02:37,846 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380
[2022-02-23 16:02:37,846 INFO  L87              Difference]: Start difference. First operand 26 states and 27 transitions. Second operand  has 20 states, 17 states have (on average 2.0) internal successors, (34), 15 states have internal predecessors, (34), 6 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4)
[2022-02-23 16:02:38,188 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-23 16:02:38,188 INFO  L93              Difference]: Finished difference Result 41 states and 46 transitions.
[2022-02-23 16:02:38,189 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2022-02-23 16:02:38,189 INFO  L78                 Accepts]: Start accepts. Automaton has  has 20 states, 17 states have (on average 2.0) internal successors, (34), 15 states have internal predecessors, (34), 6 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 21
[2022-02-23 16:02:38,189 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-23 16:02:38,190 INFO  L225             Difference]: With dead ends: 41
[2022-02-23 16:02:38,190 INFO  L226             Difference]: Without dead ends: 41
[2022-02-23 16:02:38,190 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=126, Invalid=630, Unknown=0, NotChecked=0, Total=756
[2022-02-23 16:02:38,191 INFO  L933         BasicCegarLoop]: 19 mSDtfsCounter, 36 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-23 16:02:38,191 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 79 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-23 16:02:38,192 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 41 states.
[2022-02-23 16:02:38,194 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 30.
[2022-02-23 16:02:38,194 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 30 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 21 states have internal predecessors, (23), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2022-02-23 16:02:38,195 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions.
[2022-02-23 16:02:38,195 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 21
[2022-02-23 16:02:38,195 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-02-23 16:02:38,195 INFO  L470      AbstractCegarLoop]: Abstraction has 30 states and 32 transitions.
[2022-02-23 16:02:38,195 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 20 states, 17 states have (on average 2.0) internal successors, (34), 15 states have internal predecessors, (34), 6 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4)
[2022-02-23 16:02:38,195 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions.
[2022-02-23 16:02:38,196 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2022-02-23 16:02:38,196 INFO  L506         BasicCegarLoop]: Found error trace
[2022-02-23 16:02:38,196 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-23 16:02:38,214 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2022-02-23 16:02:38,407 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-23 16:02:38,407 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-23 16:02:38,408 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-02-23 16:02:38,408 INFO  L85        PathProgramCache]: Analyzing trace with hash 1998589396, now seen corresponding path program 2 times
[2022-02-23 16:02:38,408 INFO  L126   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-23 16:02:38,408 INFO  L338   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192219187]
[2022-02-23 16:02:38,408 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-23 16:02:38,409 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-23 16:02:38,430 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:02:38,503 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-23 16:02:38,505 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:02:38,519 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2022-02-23 16:02:38,522 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:02:38,526 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15
[2022-02-23 16:02:38,528 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:02:38,530 INFO  L134       CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2022-02-23 16:02:38,531 INFO  L144   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-23 16:02:38,531 INFO  L338   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192219187]
[2022-02-23 16:02:38,531 INFO  L165   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192219187] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-23 16:02:38,531 INFO  L338   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760361595]
[2022-02-23 16:02:38,531 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-02-23 16:02:38,531 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-23 16:02:38,531 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-23 16:02:38,536 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-02-23 16:02:38,539 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2022-02-23 16:02:38,573 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-02-23 16:02:38,573 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-23 16:02:38,574 INFO  L263         TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 30 conjunts are in the unsatisfiable core
[2022-02-23 16:02:38,576 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-02-23 16:02:38,625 INFO  L390             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11
[2022-02-23 16:02:38,860 INFO  L356             Elim1Store]: treesize reduction 25, result has 37.5 percent of original size
[2022-02-23 16:02:38,861 INFO  L390             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 48
[2022-02-23 16:02:39,077 INFO  L356             Elim1Store]: treesize reduction 11, result has 21.4 percent of original size
[2022-02-23 16:02:39,077 INFO  L390             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 22
[2022-02-23 16:02:39,200 INFO  L134       CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2022-02-23 16:02:39,200 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-02-23 16:02:42,883 INFO  L165   FreeRefinementEngine]: IpTcStrategyModuleZ3 [760361595] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-23 16:02:42,883 INFO  L191   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-02-23 16:02:42,884 INFO  L204   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 16] total 19
[2022-02-23 16:02:42,884 INFO  L118   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643671047]
[2022-02-23 16:02:42,884 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-02-23 16:02:42,884 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 19 states
[2022-02-23 16:02:42,884 INFO  L108   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-23 16:02:42,885 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2022-02-23 16:02:42,885 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=470, Unknown=2, NotChecked=0, Total=552
[2022-02-23 16:02:42,885 INFO  L87              Difference]: Start difference. First operand 30 states and 32 transitions. Second operand  has 19 states, 17 states have (on average 2.0) internal successors, (34), 14 states have internal predecessors, (34), 6 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5)
[2022-02-23 16:02:43,391 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-23 16:02:43,392 INFO  L93              Difference]: Finished difference Result 55 states and 60 transitions.
[2022-02-23 16:02:43,392 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. 
[2022-02-23 16:02:43,392 INFO  L78                 Accepts]: Start accepts. Automaton has  has 19 states, 17 states have (on average 2.0) internal successors, (34), 14 states have internal predecessors, (34), 6 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 29
[2022-02-23 16:02:43,392 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-23 16:02:43,394 INFO  L225             Difference]: With dead ends: 55
[2022-02-23 16:02:43,394 INFO  L226             Difference]: Without dead ends: 55
[2022-02-23 16:02:43,394 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 28 SyntacticMatches, 5 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 501 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=296, Invalid=1682, Unknown=2, NotChecked=0, Total=1980
[2022-02-23 16:02:43,395 INFO  L933         BasicCegarLoop]: 21 mSDtfsCounter, 56 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 82 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-23 16:02:43,396 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 74 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 216 Invalid, 0 Unknown, 82 Unchecked, 0.1s Time]
[2022-02-23 16:02:43,396 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 55 states.
[2022-02-23 16:02:43,399 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 44.
[2022-02-23 16:02:43,399 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 44 states, 31 states have (on average 1.064516129032258) internal successors, (33), 32 states have internal predecessors, (33), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6)
[2022-02-23 16:02:43,400 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 46 transitions.
[2022-02-23 16:02:43,400 INFO  L78                 Accepts]: Start accepts. Automaton has 44 states and 46 transitions. Word has length 29
[2022-02-23 16:02:43,400 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-02-23 16:02:43,400 INFO  L470      AbstractCegarLoop]: Abstraction has 44 states and 46 transitions.
[2022-02-23 16:02:43,400 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 19 states, 17 states have (on average 2.0) internal successors, (34), 14 states have internal predecessors, (34), 6 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5)
[2022-02-23 16:02:43,401 INFO  L276                IsEmpty]: Start isEmpty. Operand 44 states and 46 transitions.
[2022-02-23 16:02:43,401 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 46
[2022-02-23 16:02:43,401 INFO  L506         BasicCegarLoop]: Found error trace
[2022-02-23 16:02:43,401 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-23 16:02:43,426 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2022-02-23 16:02:43,623 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2
[2022-02-23 16:02:43,624 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-23 16:02:43,624 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-02-23 16:02:43,624 INFO  L85        PathProgramCache]: Analyzing trace with hash 483843889, now seen corresponding path program 1 times
[2022-02-23 16:02:43,624 INFO  L126   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-23 16:02:43,624 INFO  L338   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102114380]
[2022-02-23 16:02:43,625 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-23 16:02:43,625 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-23 16:02:43,657 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:02:43,733 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-23 16:02:43,735 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:02:43,740 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2022-02-23 16:02:43,748 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:02:43,757 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15
[2022-02-23 16:02:43,761 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:02:43,770 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2022-02-23 16:02:43,772 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:02:43,777 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33
[2022-02-23 16:02:43,778 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:02:43,782 INFO  L134       CoverageAnalysis]: Checked inductivity of 31 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked.
[2022-02-23 16:02:43,782 INFO  L144   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-23 16:02:43,783 INFO  L338   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102114380]
[2022-02-23 16:02:43,783 INFO  L165   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102114380] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-23 16:02:43,783 INFO  L338   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463068238]
[2022-02-23 16:02:43,783 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-23 16:02:43,783 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-23 16:02:43,783 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-23 16:02:43,796 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-02-23 16:02:43,830 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2022-02-23 16:02:43,857 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:02:43,858 INFO  L263         TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 34 conjunts are in the unsatisfiable core
[2022-02-23 16:02:43,860 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-02-23 16:02:43,950 INFO  L390             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 53
[2022-02-23 16:02:43,957 INFO  L390             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 95
[2022-02-23 16:02:43,998 INFO  L356             Elim1Store]: treesize reduction 41, result has 2.4 percent of original size
[2022-02-23 16:02:43,998 INFO  L390             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 100 treesize of output 28
[2022-02-23 16:02:48,578 INFO  L356             Elim1Store]: treesize reduction 39, result has 39.1 percent of original size
[2022-02-23 16:02:48,578 INFO  L390             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 57
[2022-02-23 16:02:51,607 INFO  L356             Elim1Store]: treesize reduction 17, result has 15.0 percent of original size
[2022-02-23 16:02:51,607 INFO  L390             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 21
[2022-02-23 16:02:51,706 INFO  L134       CoverageAnalysis]: Checked inductivity of 31 backedges. 11 proven. 17 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2022-02-23 16:02:51,706 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-02-23 16:02:56,083 INFO  L165   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463068238] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-23 16:02:56,083 INFO  L191   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-02-23 16:02:56,083 INFO  L204   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 18] total 21
[2022-02-23 16:02:56,083 INFO  L118   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224193208]
[2022-02-23 16:02:56,083 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-02-23 16:02:56,083 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 21 states
[2022-02-23 16:02:56,084 INFO  L108   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-23 16:02:56,084 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2022-02-23 16:02:56,084 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=599, Unknown=4, NotChecked=0, Total=702
[2022-02-23 16:02:56,084 INFO  L87              Difference]: Start difference. First operand 44 states and 46 transitions. Second operand  has 21 states, 19 states have (on average 2.526315789473684) internal successors, (48), 17 states have internal predecessors, (48), 8 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8)
[2022-02-23 16:02:56,583 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-23 16:02:56,583 INFO  L93              Difference]: Finished difference Result 66 states and 69 transitions.
[2022-02-23 16:02:56,584 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. 
[2022-02-23 16:02:56,584 INFO  L78                 Accepts]: Start accepts. Automaton has  has 21 states, 19 states have (on average 2.526315789473684) internal successors, (48), 17 states have internal predecessors, (48), 8 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) Word has length 45
[2022-02-23 16:02:56,584 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-23 16:02:56,585 INFO  L225             Difference]: With dead ends: 66
[2022-02-23 16:02:56,585 INFO  L226             Difference]: Without dead ends: 66
[2022-02-23 16:02:56,585 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 48 SyntacticMatches, 6 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=203, Invalid=1353, Unknown=4, NotChecked=0, Total=1560
[2022-02-23 16:02:56,586 INFO  L933         BasicCegarLoop]: 27 mSDtfsCounter, 41 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 138 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-23 16:02:56,586 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 151 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 169 Invalid, 0 Unknown, 138 Unchecked, 0.1s Time]
[2022-02-23 16:02:56,587 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 66 states.
[2022-02-23 16:02:56,590 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 60.
[2022-02-23 16:02:56,590 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 60 states, 43 states have (on average 1.0465116279069768) internal successors, (45), 44 states have internal predecessors, (45), 9 states have call successors, (9), 8 states have call predecessors, (9), 7 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8)
[2022-02-23 16:02:56,591 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions.
[2022-02-23 16:02:56,591 INFO  L78                 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 45
[2022-02-23 16:02:56,591 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-02-23 16:02:56,591 INFO  L470      AbstractCegarLoop]: Abstraction has 60 states and 62 transitions.
[2022-02-23 16:02:56,591 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 21 states, 19 states have (on average 2.526315789473684) internal successors, (48), 17 states have internal predecessors, (48), 8 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8)
[2022-02-23 16:02:56,591 INFO  L276                IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions.
[2022-02-23 16:02:56,592 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 62
[2022-02-23 16:02:56,592 INFO  L506         BasicCegarLoop]: Found error trace
[2022-02-23 16:02:56,592 INFO  L514         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-23 16:02:56,610 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2022-02-23 16:02:56,807 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-23 16:02:56,808 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-23 16:02:56,808 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-02-23 16:02:56,808 INFO  L85        PathProgramCache]: Analyzing trace with hash -926913650, now seen corresponding path program 2 times
[2022-02-23 16:02:56,808 INFO  L126   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-23 16:02:56,808 INFO  L338   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346155620]
[2022-02-23 16:02:56,809 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-23 16:02:56,809 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-23 16:02:56,834 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:02:56,912 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-23 16:02:56,914 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:02:56,916 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2022-02-23 16:02:56,919 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:02:56,924 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15
[2022-02-23 16:02:56,926 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:02:56,929 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2022-02-23 16:02:56,931 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:02:56,936 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31
[2022-02-23 16:02:56,938 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:02:56,940 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41
[2022-02-23 16:02:56,941 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:02:56,945 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49
[2022-02-23 16:02:56,946 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:02:56,949 INFO  L134       CoverageAnalysis]: Checked inductivity of 68 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked.
[2022-02-23 16:02:56,949 INFO  L144   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-23 16:02:56,952 INFO  L338   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346155620]
[2022-02-23 16:02:56,952 INFO  L165   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346155620] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-23 16:02:56,952 INFO  L338   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796291295]
[2022-02-23 16:02:56,952 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-02-23 16:02:56,952 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-23 16:02:56,952 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-23 16:02:56,968 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-02-23 16:02:56,969 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2022-02-23 16:02:57,016 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-02-23 16:02:57,016 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-23 16:02:57,017 INFO  L263         TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 38 conjunts are in the unsatisfiable core
[2022-02-23 16:02:57,021 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-02-23 16:02:57,118 INFO  L390             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 53
[2022-02-23 16:02:57,122 INFO  L390             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 95
[2022-02-23 16:02:57,155 INFO  L356             Elim1Store]: treesize reduction 41, result has 2.4 percent of original size
[2022-02-23 16:02:57,156 INFO  L390             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 100 treesize of output 28
[2022-02-23 16:03:03,244 INFO  L356             Elim1Store]: treesize reduction 39, result has 39.1 percent of original size
[2022-02-23 16:03:03,245 INFO  L390             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 57
[2022-02-23 16:03:04,540 INFO  L356             Elim1Store]: treesize reduction 17, result has 15.0 percent of original size
[2022-02-23 16:03:04,540 INFO  L390             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 21
[2022-02-23 16:03:04,642 INFO  L134       CoverageAnalysis]: Checked inductivity of 68 backedges. 18 proven. 38 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2022-02-23 16:03:04,643 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-02-23 16:03:12,902 INFO  L165   FreeRefinementEngine]: IpTcStrategyModuleZ3 [796291295] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-23 16:03:12,902 INFO  L191   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-02-23 16:03:12,902 INFO  L204   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 20] total 23
[2022-02-23 16:03:12,902 INFO  L118   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66707713]
[2022-02-23 16:03:12,902 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-02-23 16:03:12,904 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2022-02-23 16:03:12,904 INFO  L108   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-23 16:03:12,904 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2022-02-23 16:03:12,904 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=747, Unknown=10, NotChecked=0, Total=870
[2022-02-23 16:03:12,904 INFO  L87              Difference]: Start difference. First operand 60 states and 62 transitions. Second operand  has 23 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 19 states have internal predecessors, (54), 10 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (10), 10 states have call predecessors, (10), 9 states have call successors, (10)
[2022-02-23 16:03:15,619 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-23 16:03:15,619 INFO  L93              Difference]: Finished difference Result 86 states and 90 transitions.
[2022-02-23 16:03:15,619 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. 
[2022-02-23 16:03:15,619 INFO  L78                 Accepts]: Start accepts. Automaton has  has 23 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 19 states have internal predecessors, (54), 10 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (10), 10 states have call predecessors, (10), 9 states have call successors, (10) Word has length 61
[2022-02-23 16:03:15,620 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-23 16:03:15,621 INFO  L225             Difference]: With dead ends: 86
[2022-02-23 16:03:15,621 INFO  L226             Difference]: Without dead ends: 86
[2022-02-23 16:03:15,621 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 72 SyntacticMatches, 8 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 17.0s TimeCoverageRelationStatistics Valid=236, Invalid=1733, Unknown=11, NotChecked=0, Total=1980
[2022-02-23 16:03:15,622 INFO  L933         BasicCegarLoop]: 30 mSDtfsCounter, 56 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 139 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-23 16:03:15,622 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 190 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 303 Invalid, 0 Unknown, 139 Unchecked, 0.2s Time]
[2022-02-23 16:03:15,622 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 86 states.
[2022-02-23 16:03:15,626 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 76.
[2022-02-23 16:03:15,626 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 76 states, 55 states have (on average 1.0363636363636364) internal successors, (57), 56 states have internal predecessors, (57), 11 states have call successors, (11), 10 states have call predecessors, (11), 9 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10)
[2022-02-23 16:03:15,627 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 78 transitions.
[2022-02-23 16:03:15,627 INFO  L78                 Accepts]: Start accepts. Automaton has 76 states and 78 transitions. Word has length 61
[2022-02-23 16:03:15,627 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-02-23 16:03:15,627 INFO  L470      AbstractCegarLoop]: Abstraction has 76 states and 78 transitions.
[2022-02-23 16:03:15,627 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 23 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 19 states have internal predecessors, (54), 10 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (10), 10 states have call predecessors, (10), 9 states have call successors, (10)
[2022-02-23 16:03:15,628 INFO  L276                IsEmpty]: Start isEmpty. Operand 76 states and 78 transitions.
[2022-02-23 16:03:15,628 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 78
[2022-02-23 16:03:15,628 INFO  L506         BasicCegarLoop]: Found error trace
[2022-02-23 16:03:15,629 INFO  L514         BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-23 16:03:15,646 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2022-02-23 16:03:15,845 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-23 16:03:15,845 INFO  L402      AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-23 16:03:15,846 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-02-23 16:03:15,846 INFO  L85        PathProgramCache]: Analyzing trace with hash -635325717, now seen corresponding path program 3 times
[2022-02-23 16:03:15,846 INFO  L126   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-23 16:03:15,846 INFO  L338   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61476470]
[2022-02-23 16:03:15,846 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-23 16:03:15,846 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-23 16:03:15,862 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:03:15,929 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-23 16:03:15,931 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:03:15,934 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2022-02-23 16:03:15,936 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:03:15,938 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15
[2022-02-23 16:03:15,939 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:03:15,941 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2022-02-23 16:03:15,942 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:03:15,944 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31
[2022-02-23 16:03:15,946 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:03:15,948 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39
[2022-02-23 16:03:15,949 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:03:15,951 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49
[2022-02-23 16:03:15,952 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:03:15,954 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57
[2022-02-23 16:03:15,954 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:03:15,956 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65
[2022-02-23 16:03:15,957 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:03:15,959 INFO  L134       CoverageAnalysis]: Checked inductivity of 121 backedges. 6 proven. 45 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked.
[2022-02-23 16:03:15,959 INFO  L144   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-23 16:03:15,959 INFO  L338   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61476470]
[2022-02-23 16:03:15,959 INFO  L165   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61476470] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-23 16:03:15,959 INFO  L338   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366089444]
[2022-02-23 16:03:15,959 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2022-02-23 16:03:15,959 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-23 16:03:15,960 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-23 16:03:15,961 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-02-23 16:03:15,965 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2022-02-23 16:03:16,408 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s)
[2022-02-23 16:03:16,408 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-23 16:03:16,411 INFO  L263         TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 55 conjunts are in the unsatisfiable core
[2022-02-23 16:03:16,414 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-02-23 16:03:16,571 INFO  L390             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 53
[2022-02-23 16:03:16,576 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2022-02-23 16:03:16,577 INFO  L390             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 95
[2022-02-23 16:03:16,856 INFO  L390             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 95
[2022-02-23 16:03:16,860 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2022-02-23 16:03:16,860 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2022-02-23 16:03:16,861 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2022-02-23 16:03:16,862 INFO  L390             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 143
[2022-02-23 16:03:16,900 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2022-02-23 16:03:16,902 INFO  L390             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 30
[2022-02-23 16:03:17,018 INFO  L134       CoverageAnalysis]: Checked inductivity of 121 backedges. 25 proven. 45 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked.
[2022-02-23 16:03:17,019 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-02-23 16:03:19,783 INFO  L390             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 41
[2022-02-23 16:03:19,787 INFO  L173   IndexEqualityManager]: detected equality via solver
[2022-02-23 16:03:19,821 INFO  L356             Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2022-02-23 16:03:19,821 INFO  L390             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 88
[2022-02-23 16:03:19,831 INFO  L173   IndexEqualityManager]: detected equality via solver
[2022-02-23 16:03:19,832 INFO  L390             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 4
[2022-02-23 16:03:19,861 INFO  L356             Elim1Store]: treesize reduction 15, result has 6.3 percent of original size
[2022-02-23 16:03:19,862 INFO  L390             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10
[2022-02-23 16:03:20,184 INFO  L134       CoverageAnalysis]: Checked inductivity of 121 backedges. 6 proven. 63 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked.
[2022-02-23 16:03:20,185 INFO  L165   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366089444] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-23 16:03:20,185 INFO  L191   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-23 16:03:20,185 INFO  L204   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 17, 21] total 43
[2022-02-23 16:03:20,185 INFO  L118   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753032217]
[2022-02-23 16:03:20,185 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-23 16:03:20,185 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 43 states
[2022-02-23 16:03:20,185 INFO  L108   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-23 16:03:20,186 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants.
[2022-02-23 16:03:20,186 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=1542, Unknown=0, NotChecked=0, Total=1806
[2022-02-23 16:03:20,187 INFO  L87              Difference]: Start difference. First operand 76 states and 78 transitions. Second operand  has 43 states, 42 states have (on average 2.0952380952380953) internal successors, (88), 38 states have internal predecessors, (88), 21 states have call successors, (24), 5 states have call predecessors, (24), 4 states have return successors, (21), 20 states have call predecessors, (21), 20 states have call successors, (21)
[2022-02-23 16:03:26,027 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-23 16:03:26,027 INFO  L93              Difference]: Finished difference Result 192 states and 224 transitions.
[2022-02-23 16:03:26,028 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. 
[2022-02-23 16:03:26,028 INFO  L78                 Accepts]: Start accepts. Automaton has  has 43 states, 42 states have (on average 2.0952380952380953) internal successors, (88), 38 states have internal predecessors, (88), 21 states have call successors, (24), 5 states have call predecessors, (24), 4 states have return successors, (21), 20 states have call predecessors, (21), 20 states have call successors, (21) Word has length 77
[2022-02-23 16:03:26,028 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-23 16:03:26,029 INFO  L225             Difference]: With dead ends: 192
[2022-02-23 16:03:26,030 INFO  L226             Difference]: Without dead ends: 192
[2022-02-23 16:03:26,031 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 138 SyntacticMatches, 2 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1956 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=1059, Invalid=6081, Unknown=0, NotChecked=0, Total=7140
[2022-02-23 16:03:26,032 INFO  L933         BasicCegarLoop]: 33 mSDtfsCounter, 371 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 1811 mSolverCounterSat, 448 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 2566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 448 IncrementalHoareTripleChecker+Valid, 1811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 307 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time
[2022-02-23 16:03:26,032 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [371 Valid, 132 Invalid, 2566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [448 Valid, 1811 Invalid, 0 Unknown, 307 Unchecked, 2.0s Time]
[2022-02-23 16:03:26,032 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 192 states.
[2022-02-23 16:03:26,046 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 127.
[2022-02-23 16:03:26,047 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 127 states, 93 states have (on average 1.086021505376344) internal successors, (101), 95 states have internal predecessors, (101), 22 states have call successors, (22), 12 states have call predecessors, (22), 11 states have return successors, (21), 19 states have call predecessors, (21), 21 states have call successors, (21)
[2022-02-23 16:03:26,048 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 144 transitions.
[2022-02-23 16:03:26,048 INFO  L78                 Accepts]: Start accepts. Automaton has 127 states and 144 transitions. Word has length 77
[2022-02-23 16:03:26,048 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-02-23 16:03:26,048 INFO  L470      AbstractCegarLoop]: Abstraction has 127 states and 144 transitions.
[2022-02-23 16:03:26,048 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 43 states, 42 states have (on average 2.0952380952380953) internal successors, (88), 38 states have internal predecessors, (88), 21 states have call successors, (24), 5 states have call predecessors, (24), 4 states have return successors, (21), 20 states have call predecessors, (21), 20 states have call successors, (21)
[2022-02-23 16:03:26,049 INFO  L276                IsEmpty]: Start isEmpty. Operand 127 states and 144 transitions.
[2022-02-23 16:03:26,049 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 94
[2022-02-23 16:03:26,050 INFO  L506         BasicCegarLoop]: Found error trace
[2022-02-23 16:03:26,050 INFO  L514         BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-23 16:03:26,069 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2022-02-23 16:03:26,250 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-23 16:03:26,251 INFO  L402      AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-23 16:03:26,251 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-02-23 16:03:26,251 INFO  L85        PathProgramCache]: Analyzing trace with hash 994030920, now seen corresponding path program 4 times
[2022-02-23 16:03:26,251 INFO  L126   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-23 16:03:26,251 INFO  L338   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670982313]
[2022-02-23 16:03:26,251 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-23 16:03:26,251 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-23 16:03:26,267 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:03:26,349 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-23 16:03:26,350 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:03:26,352 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2022-02-23 16:03:26,353 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:03:26,355 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15
[2022-02-23 16:03:26,356 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:03:26,359 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2022-02-23 16:03:26,360 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:03:26,362 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31
[2022-02-23 16:03:26,363 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:03:26,364 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39
[2022-02-23 16:03:26,365 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:03:26,368 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47
[2022-02-23 16:03:26,369 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:03:26,370 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57
[2022-02-23 16:03:26,371 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:03:26,372 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65
[2022-02-23 16:03:26,373 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:03:26,374 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73
[2022-02-23 16:03:26,374 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:03:26,377 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81
[2022-02-23 16:03:26,377 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:03:26,384 INFO  L134       CoverageAnalysis]: Checked inductivity of 190 backedges. 8 proven. 66 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked.
[2022-02-23 16:03:26,384 INFO  L144   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-23 16:03:26,384 INFO  L338   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670982313]
[2022-02-23 16:03:26,384 INFO  L165   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670982313] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-23 16:03:26,384 INFO  L338   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922036286]
[2022-02-23 16:03:26,384 INFO  L93    rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2022-02-23 16:03:26,384 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-23 16:03:26,384 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-23 16:03:26,385 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-02-23 16:03:26,386 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2022-02-23 16:03:26,946 INFO  L228   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2022-02-23 16:03:26,946 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-23 16:03:26,948 INFO  L263         TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 15 conjunts are in the unsatisfiable core
[2022-02-23 16:03:26,950 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-02-23 16:03:27,111 INFO  L134       CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked.
[2022-02-23 16:03:27,112 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-02-23 16:03:27,317 INFO  L134       CoverageAnalysis]: Checked inductivity of 190 backedges. 8 proven. 66 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked.
[2022-02-23 16:03:27,317 INFO  L165   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922036286] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-23 16:03:27,317 INFO  L191   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-23 16:03:27,317 INFO  L204   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 18
[2022-02-23 16:03:27,318 INFO  L118   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974376983]
[2022-02-23 16:03:27,318 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-23 16:03:27,318 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 18 states
[2022-02-23 16:03:27,318 INFO  L108   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-23 16:03:27,318 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2022-02-23 16:03:27,319 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306
[2022-02-23 16:03:27,319 INFO  L87              Difference]: Start difference. First operand 127 states and 144 transitions. Second operand  has 18 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 17 states have internal predecessors, (60), 14 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15)
[2022-02-23 16:03:28,426 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-23 16:03:28,427 INFO  L93              Difference]: Finished difference Result 159 states and 179 transitions.
[2022-02-23 16:03:28,427 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. 
[2022-02-23 16:03:28,427 INFO  L78                 Accepts]: Start accepts. Automaton has  has 18 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 17 states have internal predecessors, (60), 14 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) Word has length 93
[2022-02-23 16:03:28,429 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-23 16:03:28,430 INFO  L225             Difference]: With dead ends: 159
[2022-02-23 16:03:28,430 INFO  L226             Difference]: Without dead ends: 159
[2022-02-23 16:03:28,430 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 199 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=299, Invalid=693, Unknown=0, NotChecked=0, Total=992
[2022-02-23 16:03:28,432 INFO  L933         BasicCegarLoop]: 37 mSDtfsCounter, 207 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2022-02-23 16:03:28,432 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 79 Invalid, 937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2022-02-23 16:03:28,433 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 159 states.
[2022-02-23 16:03:28,438 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 116.
[2022-02-23 16:03:28,439 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 116 states, 85 states have (on average 1.0235294117647058) internal successors, (87), 86 states have internal predecessors, (87), 20 states have call successors, (20), 11 states have call predecessors, (20), 10 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19)
[2022-02-23 16:03:28,440 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 126 transitions.
[2022-02-23 16:03:28,440 INFO  L78                 Accepts]: Start accepts. Automaton has 116 states and 126 transitions. Word has length 93
[2022-02-23 16:03:28,440 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-02-23 16:03:28,440 INFO  L470      AbstractCegarLoop]: Abstraction has 116 states and 126 transitions.
[2022-02-23 16:03:28,440 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 18 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 17 states have internal predecessors, (60), 14 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15)
[2022-02-23 16:03:28,440 INFO  L276                IsEmpty]: Start isEmpty. Operand 116 states and 126 transitions.
[2022-02-23 16:03:28,442 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 150
[2022-02-23 16:03:28,442 INFO  L506         BasicCegarLoop]: Found error trace
[2022-02-23 16:03:28,442 INFO  L514         BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-23 16:03:28,460 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0
[2022-02-23 16:03:28,647 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-23 16:03:28,648 INFO  L402      AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-23 16:03:28,648 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-02-23 16:03:28,648 INFO  L85        PathProgramCache]: Analyzing trace with hash 1349749463, now seen corresponding path program 5 times
[2022-02-23 16:03:28,648 INFO  L126   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-23 16:03:28,648 INFO  L338   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48303029]
[2022-02-23 16:03:28,648 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-23 16:03:28,648 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-23 16:03:28,700 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:03:28,903 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-23 16:03:28,905 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:03:28,916 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2022-02-23 16:03:28,918 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:03:28,920 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15
[2022-02-23 16:03:28,921 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:03:28,923 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2022-02-23 16:03:28,924 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:03:28,937 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31
[2022-02-23 16:03:28,938 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:03:28,940 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39
[2022-02-23 16:03:28,941 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:03:28,943 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47
[2022-02-23 16:03:28,944 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:03:28,946 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55
[2022-02-23 16:03:28,947 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:03:28,949 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63
[2022-02-23 16:03:28,952 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:03:28,954 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71
[2022-02-23 16:03:28,956 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:03:28,965 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79
[2022-02-23 16:03:28,966 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:03:28,968 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87
[2022-02-23 16:03:28,970 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:03:28,972 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95
[2022-02-23 16:03:28,974 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:03:28,976 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103
[2022-02-23 16:03:28,977 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:03:28,982 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111
[2022-02-23 16:03:28,984 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:03:28,986 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121
[2022-02-23 16:03:28,987 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:03:28,989 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129
[2022-02-23 16:03:28,989 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:03:28,991 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137
[2022-02-23 16:03:28,991 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:03:28,993 INFO  L134       CoverageAnalysis]: Checked inductivity of 778 backedges. 6 proven. 378 refuted. 0 times theorem prover too weak. 394 trivial. 0 not checked.
[2022-02-23 16:03:28,993 INFO  L144   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-23 16:03:28,993 INFO  L338   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48303029]
[2022-02-23 16:03:28,993 INFO  L165   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48303029] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-23 16:03:28,993 INFO  L338   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699060384]
[2022-02-23 16:03:28,994 INFO  L93    rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2022-02-23 16:03:28,994 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-23 16:03:28,994 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-23 16:03:28,995 INFO  L229       MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-02-23 16:03:29,043 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2022-02-23 16:04:11,842 INFO  L228   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s)
[2022-02-23 16:04:11,842 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-23 16:04:11,886 INFO  L263         TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 31 conjunts are in the unsatisfiable core
[2022-02-23 16:04:11,889 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-02-23 16:04:12,248 INFO  L134       CoverageAnalysis]: Checked inductivity of 778 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked.
[2022-02-23 16:04:12,248 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-02-23 16:04:12,861 INFO  L134       CoverageAnalysis]: Checked inductivity of 778 backedges. 6 proven. 378 refuted. 0 times theorem prover too weak. 394 trivial. 0 not checked.
[2022-02-23 16:04:12,861 INFO  L165   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699060384] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-23 16:04:12,861 INFO  L191   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-23 16:04:12,861 INFO  L204   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 34
[2022-02-23 16:04:12,862 INFO  L118   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523619571]
[2022-02-23 16:04:12,862 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-23 16:04:12,862 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 34 states
[2022-02-23 16:04:12,862 INFO  L108   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-23 16:04:12,863 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants.
[2022-02-23 16:04:12,863 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=802, Unknown=0, NotChecked=0, Total=1122
[2022-02-23 16:04:12,863 INFO  L87              Difference]: Start difference. First operand 116 states and 126 transitions. Second operand  has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 33 states have internal predecessors, (108), 30 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (31), 30 states have call predecessors, (31), 30 states have call successors, (31)
[2022-02-23 16:04:30,872 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-23 16:04:30,872 INFO  L93              Difference]: Finished difference Result 287 states and 339 transitions.
[2022-02-23 16:04:30,873 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. 
[2022-02-23 16:04:30,873 INFO  L78                 Accepts]: Start accepts. Automaton has  has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 33 states have internal predecessors, (108), 30 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (31), 30 states have call predecessors, (31), 30 states have call successors, (31) Word has length 149
[2022-02-23 16:04:30,874 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-23 16:04:30,876 INFO  L225             Difference]: With dead ends: 287
[2022-02-23 16:04:30,876 INFO  L226             Difference]: Without dead ends: 287
[2022-02-23 16:04:30,877 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 317 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 16.0s TimeCoverageRelationStatistics Valid=1115, Invalid=2917, Unknown=0, NotChecked=0, Total=4032
[2022-02-23 16:04:30,878 INFO  L933         BasicCegarLoop]: 61 mSDtfsCounter, 705 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 2879 mSolverCounterSat, 748 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 3627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 748 IncrementalHoareTripleChecker+Valid, 2879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time
[2022-02-23 16:04:30,878 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [705 Valid, 148 Invalid, 3627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [748 Valid, 2879 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time]
[2022-02-23 16:04:30,878 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 287 states.
[2022-02-23 16:04:30,892 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 180.
[2022-02-23 16:04:30,892 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 180 states, 133 states have (on average 1.0150375939849625) internal successors, (135), 134 states have internal predecessors, (135), 36 states have call successors, (36), 11 states have call predecessors, (36), 10 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35)
[2022-02-23 16:04:30,894 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 206 transitions.
[2022-02-23 16:04:30,894 INFO  L78                 Accepts]: Start accepts. Automaton has 180 states and 206 transitions. Word has length 149
[2022-02-23 16:04:30,894 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-02-23 16:04:30,894 INFO  L470      AbstractCegarLoop]: Abstraction has 180 states and 206 transitions.
[2022-02-23 16:04:30,895 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 33 states have internal predecessors, (108), 30 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (31), 30 states have call predecessors, (31), 30 states have call successors, (31)
[2022-02-23 16:04:30,895 INFO  L276                IsEmpty]: Start isEmpty. Operand 180 states and 206 transitions.
[2022-02-23 16:04:30,897 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 278
[2022-02-23 16:04:30,897 INFO  L506         BasicCegarLoop]: Found error trace
[2022-02-23 16:04:30,897 INFO  L514         BasicCegarLoop]: trace histogram [30, 30, 30, 30, 30, 30, 30, 30, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-23 16:04:30,914 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0
[2022-02-23 16:04:31,107 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-23 16:04:31,109 INFO  L402      AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-23 16:04:31,110 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-02-23 16:04:31,110 INFO  L85        PathProgramCache]: Analyzing trace with hash -1018698857, now seen corresponding path program 6 times
[2022-02-23 16:04:31,110 INFO  L126   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-23 16:04:31,110 INFO  L338   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862836975]
[2022-02-23 16:04:31,110 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-23 16:04:31,110 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-23 16:04:31,190 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:04:31,808 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-23 16:04:31,809 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:04:31,811 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2022-02-23 16:04:31,812 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:04:31,814 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15
[2022-02-23 16:04:31,815 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:04:31,816 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2022-02-23 16:04:31,817 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:04:31,819 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31
[2022-02-23 16:04:31,820 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:04:31,822 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39
[2022-02-23 16:04:31,822 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:04:31,825 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47
[2022-02-23 16:04:31,826 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:04:31,829 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55
[2022-02-23 16:04:31,830 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:04:31,833 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63
[2022-02-23 16:04:31,835 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:04:31,837 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71
[2022-02-23 16:04:31,841 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:04:31,844 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79
[2022-02-23 16:04:31,845 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:04:31,847 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87
[2022-02-23 16:04:31,848 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:04:31,851 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95
[2022-02-23 16:04:31,852 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:04:31,854 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103
[2022-02-23 16:04:31,856 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:04:31,858 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111
[2022-02-23 16:04:31,861 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:04:31,864 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119
[2022-02-23 16:04:31,867 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:04:31,870 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127
[2022-02-23 16:04:31,872 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:04:31,873 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135
[2022-02-23 16:04:31,875 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:04:31,877 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143
[2022-02-23 16:04:31,879 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:04:31,881 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151
[2022-02-23 16:04:31,882 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:04:31,885 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159
[2022-02-23 16:04:31,887 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:04:31,889 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167
[2022-02-23 16:04:31,890 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:04:31,892 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175
[2022-02-23 16:04:31,893 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:04:31,895 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183
[2022-02-23 16:04:31,895 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:04:31,897 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191
[2022-02-23 16:04:31,897 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:04:31,899 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199
[2022-02-23 16:04:31,899 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:04:31,901 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207
[2022-02-23 16:04:31,901 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:04:31,904 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215
[2022-02-23 16:04:31,905 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:04:31,907 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223
[2022-02-23 16:04:31,908 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:04:31,909 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231
[2022-02-23 16:04:31,910 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:04:31,912 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239
[2022-02-23 16:04:31,913 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:04:31,915 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249
[2022-02-23 16:04:31,915 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:04:31,916 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257
[2022-02-23 16:04:31,917 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:04:31,918 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265
[2022-02-23 16:04:31,918 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 16:04:31,920 INFO  L134       CoverageAnalysis]: Checked inductivity of 3546 backedges. 6 proven. 1770 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked.
[2022-02-23 16:04:31,921 INFO  L144   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-23 16:04:31,921 INFO  L338   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862836975]
[2022-02-23 16:04:31,921 INFO  L165   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862836975] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-23 16:04:31,921 INFO  L338   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226166177]
[2022-02-23 16:04:31,921 INFO  L93    rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2022-02-23 16:04:31,922 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-23 16:04:31,922 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-23 16:04:31,948 INFO  L229       MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-02-23 16:04:31,979 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process